What is this pill - with 'EP120' imprint? WHITE CAPSULE USA?

This pill is described as follows:--Imprint: "EP120" on both ends of capsule --Color: White --Shape: Capsule --It is supposed to be Quinine but can't find ANY ID online ANYWHERE! _____________ / EP120 || EP120 \ \ ______ ||______ / Looks Something Like This (Obviously NOT to scale)